Newer Clients not working with OpenSuse

When I bought a 3-year license last year, OpenSuse was listed on the webpage as officially supported. The installation of Client v3.5.3 worked like a charm.

With the up-to-date Version 3.6.1., the installer returns the error:

Error: There are no enabled repositories in "/etc/dnf/repos.d", “/etc/yum.repos.d”, “/etc/yum/repos.d”, “/etc/distro.repos.d”.

which makes sense because OpenSuse doesn't use dnf or yum, but zypper.
Same happens with Version 3.6, even though OpenSuse is listed as supported in the Changelog:

Linux: minimum required distributions are now: Debian 10, Ubuntu 20.04, Red Hat 8.4, openSUSE 15.4 or SUSE Linux Enterprise Server 15 SP4

Of course, manual connect via the NetworkManager and OVPN works, but that limits the amount of features that can be used drastically.

Am I doing something wrong or was the support for OpenSuse just quietly ended?

Thanks!